Large number of desirable characters can be incorporated into a single variety by

Options

A. Mutation breeding
B. Clonal selection
C. Hybridization
D. Pureline selection

Answer

To solve the question regarding how a large number of desirable characters can be incorporated into a single variety, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks how to incorporate many desirable traits into a single plant variety. This involves understanding different breeding techniques.

2. **Identify the Options**: The options provided are mutation breeding, clonal selection, hybridization, and pure line selection. We need to evaluate each of these methods.

3. **Evaluate Mutation Breeding**: Mutation breeding involves inducing mutations in plants to create new traits. However, this method typically results in the emergence of a single desirable character rather than multiple traits. Therefore, it is not the best option for incorporating many desirable characters.

4. **Evaluate Clonal Selection**: Clonal selection refers to the process of selecting plants that are clones of a parent plant. While this method can maintain desirable traits, it does not introduce new traits or characters from different varieties. Hence, it is not suitable for incorporating multiple desirable traits.

5. **Evaluate Pure Line Selection**: Pure line selection involves selecting a single breed or variety that has desirable traits. This method focuses on maintaining a specific set of traits but does not allow for the introduction of multiple new traits from different varieties.

6. **Evaluate Hybridization**: Hybridization is the process of crossing two different parent plants that possess desirable traits. This method allows for the combination of multiple desirable characteristics into the progeny, making it the most effective way to incorporate a large number of desirable traits into a single variety.

7. **Conclusion**: Based on the evaluation, hybridization is the correct method for incorporating a large number of desirable characters into a single variety.

### Final Answer:
The correct answer is **hybridization**.

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